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Hens have one ovary. That's the place where the egg if formed. Females in general have a finite number of egg-making sites. Once they are used, they cannot be regenerated.

The actual number of eggs that get laid is dependent on a large number of factors, the first being the breed or genetics of the bird. Some hens will lay an egg 6 out of 7 days during their first season. Other breeds might lay 1 egg per week. Egg production is reduced during times of stress, extremes in weather, crowding, moulting, going broody or some change to the safety or continuity of the flock. So like the human female who is born with the potential of 1 million eggs, by the time that same woman goes into menopause, she will have only produced about 350 eggs. The others were lost due to life stressors.

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12y ago

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